(1) Cleaning of Diesel Generator Exhaust Gas Turbocharger
① Corrosive cleaning solutions are not allowed to clean various components.
② Soak the parts in cleaning solution to make them soft due to the accumulation of carbon and sediment. Among them, there is a light return oil in the middle that accumulates dirt on the turbine end.
③ Only plastic scrapers or bristle brushes can be used to clean or scrape aluminum and copper components
④ If steam shock cleaning is used, the shaft neck and other bearing surfaces should be protected.
⑤ Use compressed air to clean the lubricating oil channels on all components.
(2) Inspection of Diesel Generator Exhaust Gas Turbocharger
Do not clean all parts before visual inspection to analyze the cause of damage. List the main components to be inspected below. The D floating bearing is currently under inspection for the original damage on the ring surface and outer surface of the flesh. In general, after long-term operation, the good pot layer on the outer surface of the meat still exists, while there are slight wear marks on the end face with oil grooves on the larger inner surface of the outer circle surface after grinding. These are all normal conditions. The grooves marked on the working surface of the floating ring are caused by unclean lubricating oil. If the surface scratches are heavy or measured to exceed wear, it is recommended to replace the floating ring with a new one.
The disaster wheel rotor shaft 5 is located on the working shaft collar of the rotor, and its working surface should not be felt with fingers. Observe the accumulation of carbon at the sealing ring groove of the turbine end and the wear of the ring groove sidewall. Observe whether there are bends and fractures at the inlet and outlet edges of the turbine blades. Check whether there are cracks at the outlet edge of the blades and whether there are curled edges and burrs at the top of the blades caused by rubbing; Are there any scratches or abrasions on the turbine rotor.
Compressor impeller 4: Check for any rubbing on the back of the impeller and the top of the blades. Check for any bending or breakage of the blades. Check for cracks or damage from foreign objects at the inlet and outlet edges of the blades.
Check the collision and rubbing of the circular arc parts on the bladeless shell 3 and the compressor shell 1, or whether there is any phenomenon of being detected by parallel objects. Pay attention to observing the degree of oil deposition on the surface of each channel and analyze the causes of the above-mentioned adverse conditions.